Bar stool



FIG. 1 is a perspective view of a bar stool showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a top plan view thereof.

The broken lines and areas within the broken lines are for illustrative purpose only and form no part of the claimed design. 

CLAIM The ornamental design for a bar stool, as shown and described. 